#include <iostream>
#include <vector>
#include <string>
using namespace std;

int main(int argc, char** argv)
{
    typedef struct test {
        int a;
        int b;
    }TEST_S;

    TEST_S ts;
    ts.a = 9;

    vector<int> vec;
    string sss; 
    sss.size();
    vec.push_back(2);
    ts.b = 9;
    cout << ts.a << " " << ts.b << endl;
    cout << "this is a test program!" << endl;

    for (int i = 0; i < 10; i++) {
        cout << "Loop: " << i << endl;
    }

    return 0;
}
